Throttle-valve for locomotives



A, C. WHITE.

THROTTLE VALVE FOR LOCOMOTIVES.

APPLICATIQN FILED AUG.20. 1919- I V Patented Mar. 9, 1920.

Inventor 57' v aw s.

UN T D] TA ALF 0.;wrnTE, or 300mm,. IOWA.

THRor'rLE-vALvn ronnocoivrotrrvns.

; To all whom itmai concern." I {Be it known that I, A F C. WHITE, a citizen of the United: States, and 'aresident of Boone, in the county of Boone and State of Iowa, have invented a certain new anduse- 'ful Throttle-Valve for Locomotives, oi? which the following is aspecification.

Theobject of my invention is to provide athrottlevalve for locomotives of simple,

durable and inexpensive construction.

A. further ob]ect of my invention is to, provide a throttle valve for locomotives,

which is so constructed it may be operated with a comparatively slight efl'ort upon the part'of. the driverof the locomotives;

r A- further. object of my invention is'to pro vide a throttle valve,-which is, so arranged that movement of the. valve to position to admit steam to the cylinders of the locomotive will be caused by rearward movement of the throttle valve control rod, and so that movement of the control rod in. the reverse direction will tend to shutofi the steam from the cylinders.

v A further object of my invention is to provide a valve which maybe attached to thefsteam-pipe of the locomotive,.and installed .within the steam dome, which is so constructed that its operating. parts. will occupy minimum space, sothatit will be possible for a person to enter the boiler through boiler v,ventopening wlthout removing the steam-pipe orvalvetherefrom.

, vAflfurther object of my invention isto provide a valve and valve controlling'mechanism, which jmay be readily removed for repairs or inspectionwhjen necessary.

With-these and other objects in. view, my

invention consists in the construction, ar-- 'rangement and combination of-the various .parts ofthe device, whereby the obiectscontemplated are attained, as hereinafter more I fully set forth, pointed out in my claims and,

' Figure 1 illustrated-in the accompanying drawings, invwhichr "J I shows a side elevation of my. improved device installed in a boiler, the

' boiler being shown 'insectionto better illus portion of thesteam pipe and valve, parts trate its; construction and manner of finstah lat'ion. "l Fig. 2; shows an elevation of the upperbeing shown in section to better illustrate v the construction. f

Fig, 3 shows elevationiof the cylinders of the locomotive.

. Specification of Letters Patent. Patn ted 9, 1920. ApplicationfiledAugust 20,1919. Serial fio. 318,757. I

PATENT e. steam dome being Referring to the accompanying drawings, I have used thereference numeral 10 to indicate the shell of a boiler, having fiues 11 therein. It willbe understood that the fiues 11 are ordinarily spaced downwardly somewhatfrom the'top' of the boiler and that the boiler is provided with an opening 12, known asthe vent opening. g

Mounted within the opening 12 is a collar 13, which extends around the opening and may bexsecured tolthe boiler shell in any suitable manner, as by a flan'g'e'1l. "The forward side of thec'ollar 13 is flattened somewhat at 15, as is shown in Fig, at. I Secured to' the outer surface of the sh ll, as by a flange-16, is a steam dome. 17. Within the boiler. is a pipe 18, known as the dry-pipe, whichis extended forwardly through the 'boiler and communicates with the driving ;At the end of the dry-pipe 18, adjacent to the vent'opening 12, is .an elbow 19,. provided with flanges 20 adapted-to coact with similarfla-nges-QO; on the dry pip e 18, whereby the'gelbow andpipe may be secured to each other; Extending upwardly from the .elbow 19 ;.is a pipe 21, known asthe stand- :pipe, which has flanges '22 at its lower end, whereby it maybe' secured to the elbow- 19.

The standpipe 21' extends from the elbow upwardly through the vent opening 12 and is secured to the collar 13 by bolts 23; which "are" extended through laterally extendinglugs'24, and the portion'15 lot the collar '13.

"Lu s 25 extend from-opposite sidesof the.

standpipe 21 abovethe collar 13,, and may be secured tothe boiler shellin'any suitable way. as by bolts 96.. .2;

At theupper end of the standpi'pe 21, outwardly extending flanges 27. are. formed, which constitute a substantiallyrectangular valve seat, havingvat either side. edge upwardly extending parallel guide channels28,

adapted to receive a valve member. Mounted on the valve'seat isa valve member 29; comhprising a substantially rectangularrblock,

having laterally'projecting beads 30 atiop positesideedg'es, adapted to reciprocate in the guide members v28.

' 29 is a recess 31, which is substantially Cir- In the central lower surface of the valve cular in cross section and is adapted to register with the opening in the "standpipe when the valve is in position to cross-the upper end of the standpipe.

From the construction of the parts just 7 described, it will be seen that movement of the valve 29 to position shown iii-Fig. 2 will permit steam to enter the standpipe from the, boiler, both through the recess 31 and past the forward edge of the valve 29, as isindicated by the arrows, 32. It will thus be, seen that movement ofthe valve member through a distance substantially equal to half the diameter of the standpipewill permit a volume of steam to enter the standplpe 7 through openings substantially equal in cross sectional area of thestandpip'e. L I

Extended upwardly from the valve 29 are avpair of spaced lugs 33 between which is pivotally mountedone end of a link 3 One o end-of the link 34 is forked to pivotally receive the upper end of a lever 35. Spaced pairs of lugs 36 and 37' extend outwardly from the, rear side portion of the standpipev 21 andpivotallysupport the central portions 7 of levers and 38.

Theupper end ofthe lever 38 is forked to pivotallylreceivethe lower end of the lever 35 the lower end: of the lever 38'.'is--fo1'ked to; pivotally receive the forward? ends'of a throttle control rod: 39; I 1

From: the construction of the parts just described; itwill be. seen that movement of the throttle cont-rolrod 39 will cause a cor responding movementotthe valve 29; that isiorwardpmovement ofxthe; rod 39 will cause a forward movement of the valve 29,

thereby crossing the valve. seatopening I and shutting oil .the supplyott' steam' from the 'boiler to'thecylinders. V 7 p r i Movement 01? the, throttl'e' control rod in the opposite direct'i on'will' direct the lev' ers 38 and Began d 'the -link;:34it0move the-valve 29urearwardlyi: thereby; opening the valve seat *opening; so that :s'team may "be transinittedfrom the boiler 1' to. the cylinders- Azn: advantage "of my improvedl:construe,

tion resides'in the fact that the parts occupy ra minimnm amount. ofkspace sothat when it is desiredto'enter: the boi-ler to ginspect it,

then the steam dome ma y be removed; and

the inspector may climb down into-the boiler :thronghthelventw opening= 12without reinoving the standpipe 2lor thevalve "operating.

ilevers;. J i o If necessary however, the valveoperatmg leversmay be readily removed by driving .out the pins byv which they: a are pivotally connected: together, so that the vent opening will be a obstructed only by the stand'pip'e 21 I itself. j V Inuaddition to:this teatu ie,the device is so constructed that the "power required to from the essential featuresand purposes of my invention, and it is my intention to cover by my claims any modified formsof structure oruse of mechanical equivalentswhich may be reasonably included within their scope. "i' l I claim as my invention:

1. n a device of the, class described adapter to be installed in a boiler having a vent I opening at the upper part thereof,- and a steam dome above and closing said opening, a standpipe adapted to extend through said opening intothe dome and boiler, means for connectln a dr 138 to the lower end e 3' P l of said standpipe,.means tordetachably securing the standpipe to the forward edge of the:vent'opening, a valve seat secured-to the top of said standpipe, spaced.v "uide' devices fixed to said seat and dispose parallel with each other and with the" longitudinal axis of the boilerlai valve'mounted in said guides and adapted to move totpositionsto l selectively cover and uncover the .openingin said seat, and means for operatively con necting said valve with; the throttle control rod of theboiler. r

I '2; Ina device of the class described. adapted to be installed in a boiler having a vent-openiing at the upper part'thereof;and a steam domeqabove and closingsaid i wopening, -a

standpipe adapted to extend' 'throu'gh said op ening-into the dome" and boiler, means for connecting afdry pipeto the lower end ojf said? standpipe, means tor detachablyvsa.

curing the standpipe' to the forward edge of the-vent'opening, a valve seat se'cured tothe top ot said ,standpipe, spaced guide devices fixed tosaid seat and disposed paral-lel' with each other and with thelongitudinal axisfof the boiler; alvalve mounted in: said guides seat; a pair oztospaced verticallyalined lugs secured to the rear sideof the 'standpipe'and V extended-laterally therefrom alever pivoted intermediateof" its ends to each of s aidflugs said levers havlng their ad acent erids pivoted together, means for operatively- -v con necting the-upper'end of the upper level: to

the valve, and nieans for 'operatively c'onnecting the lower end of the lower lever to a throttle control 170d. 7 v Q 3. Ina-device ofthe class described ad-apted to be installed in a-boiler havingavent opening at theupper part thereof, and a steam 'pipe adapted toextend through-"said opening dome aboveandclosing saidropeningya standandaadapt'ed to move: to positions to selectively cover and uncover the open ng ingsaid ism into the dome and boiler, means for conthe standpipe to the forward edge of the I vent opening, a valve seat secured to the top of said standpipe, spaced guide devices fixed to said seat, and disposedparallel with each other and withthe longitudinal axis of the boiler, a valve mounted in said guides and adapted to move to positions to selectively cover and uncover the opening in said seat, means for operatively connecting said valve with the throttle control rod of the boiler, whereby rearward movement of the throttle rod may IlIlCOW-BI the opening in the valve seat.

4;. In a device of the class described adapted to be installed vin a boiler having a vent opening at the upper part thereof, and .a steam dome above and closing said opening, astandpipe adapted to extend through said openinginto the dome and boiler, means for connecting a dry-pipe to the lower end of said standpipe, means for 'detachably securing the standpipe t0 the forward edge ofthe vent opening, a valve seat, secured to the top of said standpipe, spaced guide devices fixed to said seat and disposed parallel with each other and with the longitudinal axis of the boiler, a valve mounted in said guides and adapted to moveto positions to selectively cover and uncover the opening in said seat, said valve having a central recess in its lower surface whereby steam may enter the valve seat opening through both the recess and at the end of the valve when the latter is in opened position, and means for operatively connecting said valve with the throttle control rod of the boiler.

Des Moines, Iowa, July 15, 1919.

ALF 0. WHITE. 

